司比曲线是
A．下颌牙列的纵胎曲线
B．横抬曲线
C．一条向上凸的曲线
D．补偿曲线
E．上颌牙列的纵牙合曲线
参考答案：A
— How did Mary feel when she could not answer her teacher's questions?
— _____ and uncomfortable.
[ ]
A. Casual
B. Awkward
C. Mature
D. Imnerent
女性，40岁，右上腹阵发性绞痛伴恶心、呕吐3小时来院急诊。体温37℃，右上腹轻压痛，Murphy征(-)。既往检查胆囊内有小结石。对该病人首先考虑胆囊结石合并
A．急性胆囊炎
B．急性胆管炎
C．急性胆绞痛
D．急性胰腺炎
E．急性胃炎
